CN1703649A - Rfid security device for optical disc - Google Patents
Rfid security device for optical disc Download PDFInfo
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- CN1703649A CN1703649A CNA038249723A CN03824972A CN1703649A CN 1703649 A CN1703649 A CN 1703649A CN A038249723 A CNA038249723 A CN A038249723A CN 03824972 A CN03824972 A CN 03824972A CN 1703649 A CN1703649 A CN 1703649A
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- rfid label
- layer
- control
- light adjustment
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
- G11B23/282—Limited play
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- Chemical & Material Sciences (AREA)
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- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
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- Burglar Alarm Systems (AREA)
Abstract
An optical disc has a security feature in the form of an RFID tag that communicates with a voltage controlled optical modifier layer in the optical disc. In the presence of an interrogation signal, the RFID tag allows the optical disc to be used normally by outputting a voltage to the optical modifier layer. In the absence of an interrogation signal, the optical modifier layer prevents a laser from reading from or writing on the optical disc. Other embodiments are also disclosed.
Description
The present invention relates to the safety feature of CD.
In entertainment industry, the theft intellecture property is a very outstanding topic.The duplication technology of Voice ﹠ Video record is constantly perplexing this industry for many years.From the viewpoint of measures of entertainment industry, the appearance of digital recording method has aggravated this problem.In the past, analog copy is variation gradually, and key is worth so that the last any copy that makes from previous copy all becomes.And digital copies (each time copy just with previous copy equally intact and really to accurate), eliminated the limitation that repeats to copy of preexist.
The generation of illegal copies has brought trouble to entertainment industry, equally also makes us thorny from the authoritative copy of retail shop, jukebox and similar channel theft works.Going into shop theft and similar larceny is the reason that the entertainment industry income falls sharply.(for example, CD and DVD) size is less, becomes the target of these larcenies easily, is the sizable a part of reason that causes above-mentioned loss owing to CD.
The worry that also has some other secure rom aspect.When CD comprises sensitive information, CD lose and follow-up visit bring problem may for individual or the unit of its information on this CD.This information can be financial information, personal information or government secret information.
Thereby, a kind ofly guarantee that CD uses just can't read CD in the optical-disc reader of authorizing unless need always, just perhaps after CD is authorized to use, can read the device or the technology of CD.
The present invention uses a kind of specially-made CD.This CD can comprise basalis, has the aluminium lamination of data recording pit, Control of Voltage light is adjusted layer, overlayer and radio-frequency (RF) identification (RFID) label.The RFID label is associated with Control of Voltage light adjustment layer, and when the RFID label existed in the suitable electromagnetic field, the RFID label sent instruction to Control of Voltage light adjustment layer, reads the ability of data of optical disk with the control optical pickup.
It is transparent that the instruction that sends to Control of Voltage light adjustment layer can be designed so that this light is adjusted layer, so that the data recording pit can be read, it is opaque perhaps to make this light adjust layer, so that the data recording pit is not read.In addition, this instruction and light adjustment layer can be designed to: in case this light adjustment layer is changed, this layer just maintains the original state.The RFID label can respond different agreements or order, so that this RFID label makes Control of Voltage light adjustment layer make different variations according to the agreement or the order that receive.
In an one exemplary embodiment, Control of Voltage light adjustment layer can be formed by liquid crystal material or its refractive index changes when existing or not having voltage other material.
The present invention has some purposes, for example, the safety feature of the CD of sensitive information is arranged as record.This information reads with the Disc player of the RFID interrogator (interrogator) that comprised suitable type only.The present invention can be used in the jukebox system, unless make and to use in the jukebox of authorizing, CD is just opaque.The present invention can be used as electronic article surveillance (EAS) device in the retail environment, unless CD inquires that at cashier this CD is unreadable.After inquiring in the sales transactions process, pilot light adjustment layer becomes transparent, so that CD can normally use.The present invention also can be used for soft ware authorization and the paying that pay-per-view is play and passed through the networking.
For identical security purpose, in an optional embodiment, the whole opticator of CD can be combined with the RFID label.If whole opticator is not inquired correctly by laser that then this CD is unreadable.
Read in conjunction with the accompanying drawings after the detailed description of preferred forms subsequently, it will be appreciated by those skilled in the art that scope of the present invention and realize others of the present invention.
The accompanying drawing that is included in the instructions and constitutes an instructions part has been described some aspects of the present invention, and they explain principle of the present invention with instructions.
Fig. 1 represents which is provided with the CD of RFID label.
Fig. 2 is the cross-sectional view of expression along the CD of 2-2 line among Fig. 1.
Fig. 3 represents to have the simplification Disc player of RFID interrogator.
Fig. 4 is the process flow diagram of general introduction exemplary use of the present invention.
Fig. 5 is the process flow diagram that expression the present invention and the CD that comprises sensitive information together use.
Fig. 6 is the process flow diagram that general introduction the present invention is used for being undertaken by network soft ware authorization and attached expense.
Fig. 7 is that general introduction the present invention is used for the process flow diagram that pay-per-view is play.
Fig. 8 is that general introduction the present invention is at the process flow diagram that is used for the jukebox behavior.
Fig. 9 is that general introduction the present invention is used for the antitheft process flow diagram of retail.
Figure 10 represents that whole opticator is used for the security purpose CD.
The embodiment that sets forth below provides and has made those skilled in the art can implement necessary information of the present invention, and illustrates enforcement best mode of the present invention.After the description of reading with reference to appended accompanying drawing subsequently, it will be appreciated by those skilled in the art that notion of the present invention and recognize the not application of concrete these notions that propose in this application.Be not difficult to understand that these notions and application all drop in the scope of disclosed content and accompanying Claim book.
The present invention is fit to together use CD 10 for example shown in Figure 1 with CD very much.As everyone knows, CD 10 comprises center pit 12, non-information record (non-information bearing) center anchor ring 14 and information records center anchor ring 16.CD 10 can be compact disk (compactdisc), DVD, compact disk (mini disc) or similar products, but all be designed to canned data or executable application programs on CD 10, so that recover and use by data processing equipment (for example, computing machine or audio/visual player) later on.CD 10 can also have radio-frequency (RF) identification (RFID) label 18 that is positioned at CD 10 somewheres.
In an exemplary embodiment, RFID label 18 is positioned on the non-information records center anchor ring 14 and uses the antenna 19 that combines with CD 10, the application number that this antenna 19 was submitted on April 24th, 2002 is 10/131, done announcement in 576 the U.S. Patent application, the application has comprised the content of above-mentioned patented claim by comprehensive reference.Also can be as required or use other antenna 19 on request, for example, low frequency coil antenna (coil antenna), dipole antenna, paster antenna (patch antenna), F antenna or similar products.Coupling to antenna 19 can realize by using suitable element (for example electric capacity and inductive reactive element) or any suitable means (for example, electricity, electromagnetism, magnetic, static etc.).
Shown CD 10 with cross-sectional form among Fig. 2, wherein CD 10 covers the aluminium lamination with data recording pit (not shown) from the layer of polycarbonate 20 of centre as can be seen.At CD is that aluminium lamination 22 can be present in the both sides of layer of polycarbonate 20 under the two-sided DVD situation of (as shown in the figure).What link to each other with aluminium lamination 22 is that Control of Voltage light is adjusted layer 24.Control of Voltage light adjustment layer 24 is connected on the output voltage that is provided by the RFID label when work.In an one exemplary embodiment, but Control of Voltage light adjustment layer 24 maybe can change the liquid crystal material of the polarization state of irradiation for scattering.Suitable liquid crystal material comprises the twisted nematic type liquid crystal, and it is reflexive (laser beam can see through liquid crystal material and read bit data on the aluminium lamination 22) or non-reflexive (these layers form the polarizing filter that intersects) that this liquid crystal can make CD.A kind of possibility is, makes these materials control penetrate laser spots with the material of variations in refractive index and defocuses.Other material can be the controlled coated surface (controllable mirrored surface) that can control readability that makes the optical layers back.As another possibility, can use piezoelectric layer, for example, polyvinyl fluoride base dialkylene (polyvinyl Dienyl Fluoride) plastic sheeting, this piezoelectric layer twist the surface of CD 10 so that automatic focus laser can't be followed the trail of the surface variation fast enough.Another kind of scheme is to comprise the electrochromic material, so that one-wavelength laser is absorbed by selectivity.This electrochromic examples of material is two phthalocyanine lutetiums (lutetium di-phthalocyanine).
Although can use multiple material, the net result that requires to reach is: come the light of bias voltage control correctly to adjust layer 24 unless RFID label 18 has applied output voltage, CD is not readable.This more information on the one hand can be with reference to BrP GB2, and 354,834, the application has comprised the content of above-mentioned patent by comprehensive reference.Have only when RFID label 18 when interrogator 32 receives correct mandate, RFID label 18 just produces correct output voltage (referring to Fig. 3).
At last, covering CD 10 is the overlayer 28 that protection CD 10 is avoided indentation, scuffing or similar influence.This overlayer is CD 10 tradition employing in the industry, can be made by polycarbonate.
The example that has shown the CD 10 that is in user mode among Fig. 3, well-known, Disc player 28 comprises and reading from CD 10 and/or the laser head 30 that writes in CD.Disc player 28 also can comprise interrogator 32 (for example, the interrogator or the similar products of INTERMEC sale).Be located at the inside of Disc player 28 although should be understood that illustrated interrogator 32, interrogator 32 can be hand-held, the portable or fixed cell that is positioned at Disc player 28 outsides.
The element that should be understood that Fig. 3 also can reconfigure.For example, special consideration will have DVD/CDRW and conventional personal computer and the present invention of the interrogator that is attached thereto together use.
Fig. 4 describes common usage of the present invention, and Fig. 5-9 describes the embodiment of some special considerations.Beginning, CD 10 of the present invention is placed into Disc player 28 (frame 100).Disc player 28 is opened laser head 30 (frame 102).Control of Voltage light adjustment layer 24 be initially opaque or diffusion from the laser of laser head 30, and therefore laser return laser light head 30 not is to inquire (frame 104).
The voltage that is added to Control of Voltage light adjustment layer 24 makes Control of Voltage light adjust the characteristic change (frame 110) of layer 24, so that at this moment the pit in the aluminium lamination 22 can be read by laser.At this moment, laser head 30 obtains return signal (frame 112) from the pit laser light reflected of aluminium lamination 22.With classic method return signal is separated and to be in harmonious proportion decoding, and Disc player 28 provides signal to output unit as required or on request, so that reset or similar operations.Should be noted that if send interrogating signal Disc player 28 will obtain return signal always at laser head 30 places at reasonable time.The modification of this process comprises that requirement interrogator 32 sends continuous interrogating signal, in a single day if do not have interrogating signal, CD becomes not readable once more.
As a kind of selection scheme, Control of Voltage light adjustment layer 24 can be as required or keep controlled state on request in a schedule time, and this time is corresponding to single play or other time frame (time frame) of CD 10 contents.In an one exemplary embodiment of this conception of species, RFID label 18 can link with electric capacity (not shown), and this RFID label is charged to known threshold voltage with this electric capacity.The state that this threshold voltage is added on the Control of Voltage light adjustment layer 24 and keeps permission CD 10 to be read.Can use resistance or other mechanism to delay electric capacity discharge in time.In a preferred embodiment, the speed of discharge is suitably selected, and makes just to change to CD 10 unreadable states through Control of Voltage light adjustment layer 24 after the schedule time.As another selection scheme, RFID label 18 can be enough to drive the electric charge of low energy clock devices in the capacitor memory storage, this clock devices was counted the cycle, up to the process preset time at interval, at this moment the REID label can discharge to electric capacity, or otherwise changes the performance that Control of Voltage light is adjusted layer 24.As another selection scheme, if CD 10 comprises photonic layer (as shown in figure 10), available laser is removed electric charge from this layer.Thereby after CD 10 was used certain number of times, this photonic layer was discharged and CD 10 will become not readable.Available optical filter is guaranteed by laser (rather than daylight) photonic layer to be advanced discharge.Also can be as required or use on request and postpone other mechanism discharge time.
As another selection scheme, suitably the appearance of interrogating signal can allow RFID label 18 make Control of Voltage light adjust layer 24 change forever, can use this CD 10 not need further inquiry.5-9 studies in more detail to these notions with reference to the accompanying drawings.
The embodiment that Fig. 5 disclosed is applicable to that any wherein CD 10 comprises the situation that maybe will comprise sensitivity or confidential information.These information comprise personal information, financial information and/or military affairs or government information.Beginning, CD 10 is placed into Disc player 28 (frame 150).CD 10 can not be used by Disc player 28 at first.Particularly, Disc player 28 not can read CD 10 and cannot write (frame 152) to CD 10 yet.The user can introduce interrogating signal (frame 154) by interrogator 32 subsequently.Interrogator 32 can with Disc player 28 integrated or external devices, for example, be fixed near the battery-powered key the Disc player 28, and the wall of interrogator 32 by Disc player 28 sends interrogating signals to RFID label 18.Because the appearance of interrogating signal, RFID label 18 output voltages also change the optical property (frame 156) that Control of Voltage light is adjusted layer 24.
If CD 10 is Write once optical disc, read-only optical disc or writable disc, then these functions are activated when interrogating signal occurs.(frame 158).When CD 10 was Write once optical disc, whether available memory (not shown) was followed the tracks of CD and is written into.This storer can with RFID label 18 interfaces so that do not carry out other write command on the CD 10.
Fig. 6 describes an embodiment, wherein software is authorized and pays by network (for example, internet).In the present embodiment, Disc player 28 or interrogator 32 can have the connection to remote site, for example, modulator-demodular unit 36 and/or 38 or network connect.CD 10 is inserted into Disc player 28 (frame 200).Disc player 28 is opened laser head 30 but can't be detected return signal (frame 202).CPU 34 can detect this situation that can't return signal, and produces the order (frame 204) that is connected to remote site by network, to obtain to use the mandate of CD 10.The address information of remote site or contact details can be positioned at not on the part of the CD 10 that is covered by Control of Voltage light adjustment layer 24.In addition, Disc player 28 and/or interrogator 32 can be connected to specific remote site automatically.This remote site can be inquired CPU 34 or other device, to determine the classification of the order that triggering Disc player 28 works.If this order is installation order or play command, process continues.Yet if this order is a copy command, process is interrupted.
Remote site begins payment transaction (frame 206).Thereby, can be from attempting to use the individuality of CD 10 to obtain paying information.Can obtain paying information by the means that credit card reader, keyboard are manually imported or other is suitable as required or on request.Can be as required or on request by using the metering way of paying, paying by metering way of paying or alternate manner.In case after situation about having obtained paying was satisfied, remote site can send signal to interrogator 32, to produce suitable interrogating signal (frame 208).According to needing or on request, and depend on the existence of modulator-demodular unit 38, this signal can or directly send to interrogator 32 through CPU 34.This interrogating signal is produced, and RFID label 18 receives this interrogating signal (frame 210).Control of Voltage light is adjusted layer 24 and is changed, and laser head 30 produces return signal (frame 212).(frame 214) proceeded in the installation or the broadcast of the content of CD 10.
By similar mode, the present invention can be used for the film that metering is paid is watched or other metering is paid to play and authorized.Fig. 7 describes this situation.This process is very similar, and CD 10 is inserted into (frame 250) in the Disc player 28.Disc player 28 is opened laser head 30 by order and is read CD 10, but does not receive return signal (frame 252).Confirm not exist return signal, CPU 34 or other unit to set up long-range connection (frame 254).The address information of remote site or contact details can be positioned on the CD 10 not on the part of being covered by Control of Voltage light adjustment layer.As a kind of scheme of selection, Disc player 28 and/or interrogator 32 can be connected to specific remote site automatically.
In case be in communications status with remote site, just can begin payment transaction (frame 256), to carry out mandate to the single play of the content on the CD 10.Remote site can be inquired CPU 34, wants to play CD 10 or copy CD 10 to check the user.If the latter will cancel payment transaction or no longer begin payment transaction.In this way, the copy of CD can be prevented from.
In case obtain to pay, but remote site authorization query signal (frame 258).Can be as required or manually import by credit card reader, keyboard on request or other suitable means obtain paying information.Can pay by use metering way of paying, installation metering way of paying or alternate manner as required or on request.Interrogator 32 produces interrogating signal, and this interrogating signal is received (frame 260) by the RFID label on the CD 10 18.18 outputs of RFID label change the required voltage that Control of Voltage light is adjusted the attribute of layer, and this moment, laser can produce return signal, and this return signal receives (frame 262) by laser head 30.Content on the CD 10 can be played (frame 264) subsequently.The storer that is associated with CPU 34, interrogator 32 or RFID label 18 can be followed the tracks of the voltage of RFID label 18 and export the appropriate time that changes, promptly after content is played once, so that CD 10 is no longer readable.
Fig. 8 describes another embodiment, and wherein jukebox (do not have concrete expression) or similar playing device can comprise the CD 10 that has content above a plurality of.These CDs 10 are represented a investment separately, if stolenly will bring economic loss to the operator of jukebox.In order to realize the purpose of present embodiment, jukebox and Disc player 28 are similar, just can work because jukebox will comprise the Disc player 28 of operation.In order to help prevent this class larceny, the present invention is useful.CD 10 is placed in the jukebox (frame 300).Jukebox can produce desired interrogating signal (frame 302) in whole jukebox.As a kind of selection scheme, interrogating signal can be limited in the interior and zone on every side of Disc player in the jukebox.Under above-mentioned arbitrary situation, when CD 10 was in jukebox, CD 10 was with regard to normal play (frame 304).At a time, CD 10 can shift out from jukebox, and shifts out (frame 306) thus from the interrogating signal that exists.Under the situation that does not have interrogating signal, the RFID label 18 on the CD 10 does not produce the required output voltage of properties of optical disks that changes Control of Voltage optics demodulator layer 24, and therefore CD can not be play (frame 308) again.Although this method does not avoid theft, eliminated the theft motivation, because what can steal no longer is available CD 10, and the no one wants to buy this useless CD 10.
Fig. 9 has shown another embodiment.This embodiment purpose is to help to reduce or prevent the larceny that retail environment is interior.It is stable at two different conditions that present embodiment requires Control of Voltage light to adjust layer 24.First state makes aluminium lamination 22 not readable.Second state makes aluminium lamination 22 readable.Can find the more information of bifurcation material in aforesaid BrP in ' 834.Any one state should be able to remain unchanged when not occurring from RFID label 18 signals, but from the signal of RFID label Control of Voltage light adjustment layer 24 is transformed between these two states.Use this bifurcation Control of Voltage light adjustment layer 24 to be in unreadable first state (frame 350) from making CD.This can be as required or on request in manufacture process, when arriving retail environment or finish At All Other Times.
The consumer buys CD 10 (frame 352) in authorized location.As everyone knows, this purchase must be followed and pick out CD 10 and go to the cashier position or similarly behavior on the shelf in shop.The cashier of retail company obtains the paying (frame 354) of CD 10.Can pay by any classic method (for example, cash, check, credit card, debit card or similar form).Near the interrogating signal (frame 356) that the cashier makes CD 10 be subjected to producing authorized location subsequently.This interrogating signal can be as required or is produced by portable hand-held interrogator 32 on request or produced by the interrogator 32 that is incorporated into sale device point (for example cashier or similar device).
The present invention is not limited to the described Control of Voltage light that changes simply of Fig. 8 and adjusts layer 24, combines but also can guard against (EAS) function, stock's control or logistics management with electronic goods.For example,, in the step of frame 356, be sent to RFID label 18 when making CD readable when interrogating signal, a mark can also be set in the storer of RFID label 18 if the centre frequency of RFID label work is 13.56MHz.This mark can indicate CD 10 to be bought by proper.Also other sign can be set, perhaps other sign be attached in this first sign.Other sign can be indicated the purchase place and the timestamp of this CD 10.If detect the RFID label 18 that has incorrect mark, the scanner in exit, shop will give the alarm.This scanner and sign setting are that the EAS technology is known.This method has increased security, and helps prevent from shelf and take off commodity and directly take return of goods repayment subsequently, claims the larceny that receipt has been lost simultaneously.This duplex safety measures can effectively frighten larceny.
The embodiment that should be noted that Fig. 9 is not limited to retail company, also can be used on other non-retail company (for example library).In addition, the behavior of CD 10 although present embodiment itself can not avoid theft, present embodiment has been eliminated the theft motivation, because if without interrogating signal Control of Voltage light adjustment layer 24 is changed to the second readable state, CD 10 is useless.
This conception of species can have many modification.For example, this conception of species also can be used for optical memory card (for example, the optical memory card of U.S. Department of Defense's use).Another selection is full optical tag/CD 50 shown in Figure 10.The similarity of this CD 50 and CD 10 is: this CD also comprises center pit 52, non-information record anchor ring 54 and information record anchor ring 56.RFID label 18 can be positioned on the CD 50 as above-mentioned and be connected to Control of Voltage light adjusts layer 24.In addition, RFID label 18 can be connected to the photo-voltaic area 58 of amorphous silicon or polymer semiconductor.As a kind of selectable scheme, photo-voltaic area 58 also can be thermoelectricity (pyro-electric) zone.In order to use CD 50, disk writer must at first be attempted to write specific code to photo-voltaic area 58, produces the voltage that drives RFID label 18.Provide the data input by Laser Modulation to RFID label 18, if these data are correct, it is clear then to make the RFID label Control of Voltage light can be adjusted layer 14 temporary change, to read, or, CD 50 can forever be used by using bifurcation material discussed above.This technology can be as required or is used separately on request or together use with interrogating signal, the dirigibility when realizing transferring the possession of security protocol etc.
Be further noted that, although generally use the existence of interrogating signal or do not exist and trigger the RFID label to Control of Voltage light adjustment layer 24 a transmission voltage signal, but also can be up to interrogator 32 send make the predetermined data sequence that the RFID label takes orders after, the RFID label just can be inquired and be responded with normal mode.After receiving and having confirmed this predetermined data sequence, interrogator 3 can send order to RFID label 18, causes Control of Voltage light adjustment layer 24 desired output voltage that changes to provide.
Although should be noted that at present and discuss that the part that can only forbid CD 10 obtains identical effect with regard to forbidding whole CD 10.For example, just can not make this DVD readable and obtain identical effect by the country code (country code) and the index information (index information) of forbidding on the DVD.
Person of skill in the art will appreciate that the improvement or the modification of the preferred embodiment of the present invention.All these improvement and revise all should be thought in the scope of the notion that discloses in the application and claim subsequently.
Claims (74)
1. CD, described CD comprises:
Have the RFID label of voltage output, described RFID label responds to signal, makes described voltage output based on the existence of described signal or do not exist and change;
Be suitable for content content encoded layer thereon; And
Control of Voltage light is adjusted layer; described Control of Voltage light adjustment layer is associated with described content layer and described RFID label; unless provide in the voltage output to described Control of Voltage light adjustment layer under the situation of suitable voltage signal so that described signal has been added to described RFID label and described RFID label, described Control of Voltage light adjustment layer can be protected to the described content layer of small part and do not utilized by Disc player.
2. CD as claimed in claim 1, wherein, described CD comprises optical memory card.
3. CD as claimed in claim 1, wherein, described Control of Voltage light adjustment layer comprises the material of selecting from the group that liquid crystal material, piezoelectric and controlled coated surface constitute.
4. CD as claimed in claim 1, wherein, described RFID label responded to predetermined sequence of data before changing described output voltage.
5. CD as claimed in claim 1, wherein, described Control of Voltage light adjustment layer comprises a kind of at two in stable condition materials, and when being in a state, described content layer is readable, and when being in another state, described content layer is not readable.
6. CD as claimed in claim 1, wherein, described CD comprises the disc of selecting from the group that DVD, audio frequency CD, software cd, CDRW and one-time write CD constitute.
7. CD as claimed in claim 1, wherein, the frequency band of described RFID label response before and after certain centre frequency, described centre frequency is selected from the group that 125kHz, 13.56MHz, 915Mhz and 2450MHz constitute.
8. CD as claimed in claim 1, wherein, after receiving suitable interrogating signal, described RFID label is exported a voltage, and described voltage makes described Control of Voltage light adjustment layer change to second state indefinitely, so that described content layer is readable.
9. CD as claimed in claim 1, wherein, the content that provides in order to the data that are connected to remote site is provided described content layer, whether this remote site can be accessed, and exist proper signal irrelevant.
10. CD as claimed in claim 1, wherein, after being subjected to described suitable interrogating signal irradiation, described Control of Voltage light adjustment layer makes described content layer readable in the time of predetermined length.
11. CD as claimed in claim 1, wherein, described RFID label responds to the interrogating signal that interrogator produces.
12. control the method that CD uses for one kind, comprising following steps:
The RFID label is installed on described CD;
Inquire described CD with prearranged signal;
Produce output voltage by described RFID label; And
Described output voltage is added to Control of Voltage light adjusts layer, the optical signature of described Control of Voltage light adjustment layer is changed, to allow from the content layer reading of content.
13. method as claimed in claim 12 wherein, inquires that the step of described CD comprises: utilize the interrogator that is integrated in the Disc player that described CD is inquired.
14. method as claimed in claim 12 wherein, inquires that the step of described CD comprises: the unit that utilizes conduct to be independent of Disc player carries out the interrogator of work described CD is inquired.
15. method as claimed in claim 12 comprises that also the contact remote place sends the step of the permission of described predetermined query signal with acquisition.
16. method as claimed in claim 15, wherein, the step in contact remote place comprises: utilize interrogator to come the contact remote place.
17. method as claimed in claim 15, wherein, the step in contact remote place comprises: utilize Disc player to come the contact remote place.
18. method as claimed in claim 12 also comprises the step of utilizing Disc player to read described CD.
19. method as claimed in claim 12 also comprises from the step of utilizing Disc player to write to described CD.
20. method as claimed in claim 12 also comprises from the step of described CD install software.
21. method as claimed in claim 12 also is included in the step that described CD is installed in the jukebox.
22. method as claimed in claim 12 also is included on the described CD storage sensitive information and stops step to the visit of described CD when having described prearranged signals.
23. method as claimed in claim 12 also is included in the step that allows the audio content on the described CD of visit when having described prearranged signals.
24. method as claimed in claim 23 also is included in the step of the audio content on the described CD of inaccurate visit when not having described prearranged signals.
25. method as claimed in claim 12 also is included in the step that allows the video content on the described CD of visit when having described prearranged signals.
26. method as claimed in claim 25 also is included in the step of the video content on the described CD of inaccurate visit when not having described prearranged signals.
27. method as claimed in claim 12, wherein, described output voltage is added to Control of Voltage light adjustment layer, the optical signature of described Control of Voltage light adjustment layer is changed and allows to comprise from the step of content layer reading of content: the state of bifurcation light adjustment layer is changed to second state from first state, and wherein said light adjustment layer is remained on described second state indefinitely.
28. method as claimed in claim 12, wherein, described output voltage is added to Control of Voltage light adjustment layer, the optical signature of described Control of Voltage light adjustment layer changed and allow to comprise from the step of content layer reading of content: the refractive index that changes liquid crystal material.
29. method as claimed in claim 12, wherein, described output voltage is added to Control of Voltage light adjustment layer, the optical signature of described Control of Voltage light adjustment layer changed and allow to comprise from the step of content layer reading of content: the reflectivity properties that changes coated surface.
30. method as claimed in claim 12, wherein, described output voltage is added to Control of Voltage light adjustment layer, the optical signature of described Control of Voltage light adjustment layer is changed comprise from the step of content layer reading of content allowing: the shape that changes piezoelectric.
31. method as claimed in claim 12 wherein, utilizes prearranged signals to inquire that the step of described CD comprises: in retail environment, inquire described CD during payment transaction.
32. method as claimed in claim 12 wherein, inquires that with prearranged signals the step of described CD comprises: after the consumer who buys the access right of CD content from hope obtains to pay, utilize the predetermined query signal to inquire described CD.
33. a method of protecting optical disc information said method comprising the steps of:
Described CD is associated with Control of Voltage light adjustment layer with the RFID label; And
Control described Control of Voltage light with described RFID label and adjust layer, make that the layer of partial content at least on the described CD can not be accessed when not having prearranged signals.
34. method as claimed in claim 33, wherein, the step of controlling described Control of Voltage light adjustment layer comprises: utilize the output voltage of described RFID to change the refractive index that described Control of Voltage light is adjusted layer, make laser not read or can not write to described content layer from described content layer.
35. method as claimed in claim 33, wherein, the step of controlling described Control of Voltage light adjustment layer comprises: the material of selecting the group that constitutes from liquid crystal material, piezoelectric and controlled Coating Materials is controlled.
36. method as claimed in claim 33 also comprises the step of inquiring described CD with described prearranged signals.
37. method as claimed in claim 36 wherein, inquires that the step of described CD comprises: inquire described CD with the interrogator that is integrated in the Disc player.
38. method as claimed in claim 36 wherein, inquires that the step of described CD comprises: use the interrogator that separates with Disc player to inquire described CD.
39. method as claimed in claim 36 also comprises the step that obtains the permission of the described prearranged signals of generation from remote site.
40. method as claimed in claim 33 also is included in and is subjected to the step that described prearranged signals irradiation back allows the content layer of the described CD of visit in the time of predetermined length.
41. a method of controlling the software on the CD said method comprising the steps of:
With software as content stores to CD; And
When not having the prearranged signals that is added on the RFID label that is associated with described CD, stop to be taken to the small part content from described optical disk reading.
42. method as claimed in claim 41 also is included near the step of the described prearranged signals of generation of described CD.
43. method as claimed in claim 42 also is included in and produces the described prearranged signals step in contact remote place before.
44. method as claimed in claim 43, wherein, the step in contact remote place comprises: by the net connection remote site.
45. method as claimed in claim 43, wherein, the step in contact remote place also comprises: began payment transaction before producing described prearranged signals.
46. method as claimed in claim 41, wherein, when not having the prearranged signals that is added on the RFID label that is associated with described CD, stop from the step of described CD reading of content and comprise: prevent that by stoping optical-disc reader to obtain return signal described optical-disc reader from visiting described content from described optical disc surface.
47. method as claimed in claim 46 wherein, stops optical-disc reader to comprise from the step that described optical disc surface obtains return signal: to use the material of selecting from the group that is made of liquid crystal material, controlled Coating Materials and piezoelectric.
48. method as claimed in claim 46, in case also comprise and receive that described prearranged signals is just with the step of described RFID label generation output voltage.
49. method as claimed in claim 48 comprises that also output voltage with described RFID label changes the character of Control of Voltage light adjustment layer of described CD so that the step that described CD can be read by optical-disc reader.
50. a method of controlling CD content said method comprising the steps of:
Memory contents on CD; And
When not having the prearranged signals that is added on the RFID label that is associated with described CD, stop to be taken to the small part content from described optical disk reading.
51. method as claimed in claim 50 also is included near the step of the described prearranged signals of generation of described CD.
52. method as claimed in claim 51 also is included in and produces the described prearranged signals step in contact remote place before.
53. method as claimed in claim 52, wherein, the step in contact remote place comprises: by the net connection remote site.
54. method as claimed in claim 52, wherein, the step in contact remote place also comprises: began payment transaction before producing described prearranged signals.
55. method as claimed in claim 50, wherein, when not having the prearranged signals that is added on the RFID label that is associated with described CD, stop from the step of described CD reading of content and comprise: prevent described optical-disc reader accessed content by stoping optical-disc reader to obtain return signal from described optical disc surface.
56. method as claimed in claim 55 wherein, stops optical-disc reader to comprise from the step that described optical disc surface obtains return signal: to use the material of selecting from the group that is made of liquid crystal material, controlled Coating Materials and piezoelectric.
57. method as claimed in claim 55 also is included in and receives the step that produces output voltage behind the described prearranged signals with described RFID label.
58. method as claimed in claim 57 also comprises with the output voltage of described RFID label changing the character of the Control of Voltage light adjustment layer of described CD, the step that described CD can be read by optical-disc reader.
59. method as claimed in claim 50, wherein, the step of memory contents comprises on described CD: store video content on DVD.
60. method as claimed in claim 50, when not having the prearranged signals that is added on the RFID label that is associated with described CD, stop and comprise: after securing permission, optionally allow described content is carried out by the visit of watching paying at every turn from remote site from the step of described CD reading of content.
61. a method that prevents the larceny on the jukebox said method comprising the steps of:
The RFID label of CD with the light adjustment layer of the described CD of control is associated;
Described CD is installed in the jukebox; And
Inquire described RFID label with prearranged signals, so that described RFID label makes described light adjustment layer that described CD can be read by the optical-disc reader that links with described jukebox.
62. method as claimed in claim 61, wherein, CD is comprised with the step that the RFID label of the light adjustment layer of the described CD of control is associated: near the RFID label of working for the frequency at center the frequency of selecting in the group that constitutes from 125kHz, 13.56MHz, 915MHz and 2450MHz is associated.
63. method as claimed in claim 61 wherein, makes described light adjustment layer allow described CD do not read by optical-disc reader when not having described prearranged signals.
64. as the described method of claim 63, wherein, make described light adjustment layer when not having described prearranged signals, allow described CD do not comprised: to make the light adjustment layer of from the group that constitutes by piezoelectric layer, liquid crystal layer and controlled coatings, selecting that described CD can not be read by the step that optical-disc reader reads.
65. method as claimed in claim 61 wherein, comprises CD: control described light with the output voltage of described RFID label and adjust layer with the step that the RFID label of the light adjustment layer of the described CD of control is associated.
66. a method that prevents the larceny in the retail company, this method may further comprise the steps:
The RFID label of CD with the light adjustment layer of the described CD of control is associated;
Make described light adjustment layer be in first state, described first state can not be read at least a portion of described CD by optical-disc reader; And
After the consumer pays to described CD, described light adjustment layer is adjusted to second state selectively, when being in described second state, described CD can be read by optical-disc reader.
67. as the described method of claim 66, wherein, the step of Tiao Zhenging comprises selectively: the RFID label that signal is sent to described CD.
68. as the described method of claim 67, wherein, the step that sends signal to the RFID label of described CD comprises: send interrogating signal from the interrogator that is integrated in sale device point.
69. as the described method of claim 67, wherein, the step that sends signal to the RFID label of described CD comprises: send interrogating signal from the portable interrogator that is associated with the shop-assistant who is responsible for collecting described CD expense.
70. as the described method of claim 66, wherein, the step that sends signal comprises: send being the interrogating signal of the frequency at center near the frequency of from the group that constitutes by 125kHz, 13.56MHz, 915MHz and 2450MHz, selecting.
71., also be included in the storer that is associated with described RFID label mark be set as the described method of claim 66.
72. as the described method of claim 71, wherein, the step that mark is set in the storer that is associated of described RFID label comprises: indicate described CD just when buying.
73., also be included in the proper indication in place and the step of timestamp bought of storing in the storer about described CD as the described method of claim 72.
74. an optical device, comprising:
Content carrying medium with edge;
Photo-voltaic area near described edge;
The Control of Voltage light that is associated with described content carrying medium is adjusted layer; And
With the chip that described photo-voltaic area is associated, this association is attempted after described photo-voltaic area writes the predetermined query signal disk writer, and described chip produces and makes described Control of Voltage light adjust the accessed output voltage of the layer described content carrying medium of permission.
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| US10/241,924 US7275040B2 (en) | 2002-09-12 | 2002-09-12 | RFID security device for optical disc |
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| CN100582873C CN100582873C (en) | 2010-01-20 |
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| CN03824972A Expired - Fee Related CN100582873C (en) | 2002-09-12 | 2003-09-10 | RFID security device for optical disc |
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| JP (2) | JP4262679B2 (en) |
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- 2003-09-10 DE DE60321578T patent/DE60321578D1/de not_active Expired - Lifetime
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- 2003-09-10 CN CN03824972A patent/CN100582873C/en not_active Expired - Fee Related
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| KR100734681B1 (en) | 2007-07-02 |
| WO2004025645A3 (en) | 2004-06-03 |
| AU2003267714A8 (en) | 2004-04-30 |
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| US7447143B2 (en) | 2008-11-04 |
| US20070063846A1 (en) | 2007-03-22 |
| CN100582873C (en) | 2010-01-20 |
| US7571115B2 (en) | 2009-08-04 |
| KR20050083688A (en) | 2005-08-26 |
| JP4262679B2 (en) | 2009-05-13 |
| WO2004025645A2 (en) | 2004-03-25 |
| ATE398297T1 (en) | 2008-07-15 |
| JP2005538496A (en) | 2005-12-15 |
| US7275040B2 (en) | 2007-09-25 |
| US7571114B2 (en) | 2009-08-04 |
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